The Kantar grocery market share figures for the 12 weeks to 19 May 2019, showed that Aldi and Lidl were collectively worth £344m more than the same period in 2018 and reached a collective market share of 13.8%.

Sainsbury’s market share meanwhile fell 0.5 percentage points to 15.2%, and Kantar said that the grocer and its one-time merger partner Asda are now “neck and neck in the number two position”. Asda also experienced a downturn in sales, falling 0.2% to 10.7%.

Aside from the discounters, the Co-op delivered the strongest bricks-and-mortar growth of all the grocers during this period, seeing sales swell 3.7%.